By Nathan Good

Average Expressions are a vital a part of programming, yet they are often tough to come back to grips with. typical Expression Recipes for home windows builders includes over a hundred of the preferred general expressions, besides causes of ways to take advantage of each. Languages lined comprise JavaScript, VB, VB.NET, and C#.The writer offers concise syntax references as wanted, and allows the reader to benefit extra approximately typical expressions by way of instance. internet and functions builders will locate the examples during this publication exact and suitable. This publication should be a terrific suggestions advisor for a developer or structures administrator to maintain in a convenient position for fast reference.

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Additional resources for Regular Expression Recipes for Windows Developers: A Problem-Solution Approach

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A character class . . ^ that isn’t . . " another quote . . ] the end of the character class . . * zero or more times . . " another quote appears. You might notice that missing from the previous list are the extra characters found in the code that escape the double quotes. That’s because the escape characters are necessary for the programming language in which they appear, so the compilers or scripting engines know how to parse the code. Escape characters for quotes aren’t used by the regular expression engine.

Followed by something . . \s followed by whitespace . . + that occurs one or more times. The something here is another expression, moo|oink. This expression is as follows: m an m, followed by . . o an o, then . . o an o . . | or . . o an o, followed by . . i an i, then . . n an n, followed by . . k a k. Variations A useful variation of this recipe is to replace the \s+ combination, which matches specifically whitespace, with the word boundary character class \b. WORDS AND TEXT \s 14 1-4 ■ FINDING VARIATIONS ON WORDS (JOHN, JON, JONATHAN) WORDS AND TEXT 1-4.

Org. NET Framework. You can test each class included in the code samples in this book using NUnit. org. CHAPTER 1 ■■■ Words and Text T his chapter includes recipes for doing some of the basics of regular expressions, such as finding and replacing words and certain special characters such as tabs and trademark characters. Although this book isn’t organized into levels of difficulty, this first chapter includes many basic concepts that will make the rest of the book easier to follow. You won’t have to go through this chapter to understand later ones, but it may help if you’re new to regular expressions to make sure all the recipes in this chapter are easy to understand.

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